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2017-09-07vtls: switch to CURL_SHA256_DIGEST_LENGTH defineDaniel Stenberg
... instead of the prefix-less version since WolfSSL 3.12 now uses an enum with that name that causes build failures for us. Fixes #1865 Closes #1867 Reported-by: Gisle Vanem
2017-09-06SSL: fix unused parameter warningsJay Satiro
2017-09-06mime: drop internal FILE * support.Patrick Monnerat
- The part kind MIMEKIND_FILE and associated code are suppressed. - Seek data origin offset not used anymore: suppressed. - MIMEKIND_NAMEDFILE renamed MIMEKIND_FILE; associated fields/functions renamed accordingly. - Curl_getformdata() processes stdin via a callback.
2017-09-06configure: remove --enable-soname-bump and SONAME_BUMPDaniel Stenberg
Back in 2008, (and commit 3f3d6ebe665f3) we changed the logic in how we determine the native type for `curl_off_t`. To really make sure we didn't break ABI without bumping SONAME, we introduced logic that attempted to detect that it would use a different size and thus not be compatible. We also provided a manual switch that allowed users to tell configure to bump SONAME by force. Today, we know of no one who ever got a SONAME bump auto-detected and we don't know of anyone who's using the manual bump feature. The auto- detection is also no longer working since we introduced defining curl_off_t in system.h (7.55.0). Finally, this bumping logic is not present in the cmake build. Closes #1861
2017-09-06vtls: select ssl backend case-insensitive (follow-up)Gisle Vanem
- Do a case-insensitive comparison of CURL_SSL_BACKEND env as well. - Change Curl_strcasecompare calls to strcasecompare (maps to the former but shorter). Follow-up to c290b8f. Bug: https://github.com/curl/curl/commit/c290b8f#commitcomment-24094313 Co-authored-by: Jay Satiro
2017-09-05openssl: Integrate Peter Wu's SSLKEYLOGFILE implementationJay Satiro
This is an adaptation of 2 of Peter Wu's SSLKEYLOGFILE implementations. The first one, written for old OpenSSL versions: https://git.lekensteyn.nl/peter/wireshark-notes/tree/src/sslkeylog.c The second one, written for BoringSSL and new OpenSSL versions: https://github.com/curl/curl/pull/1346 Note the first one is GPL licensed but the author gave permission to waive that license for libcurl. As of right now this feature is disabled by default, and does not have a configure option to enable it. To enable this feature define ENABLE_SSLKEYLOGFILE when building libcurl and set environment variable SSLKEYLOGFILE to a pathname that will receive the keys. And in Wireshark change your preferences to point to that key file: Edit > Preferences > Protocols > SSL > Master-Secret Co-authored-by: Peter Wu Ref: https://github.com/curl/curl/pull/1030 Ref: https://github.com/curl/curl/pull/1346 Closes https://github.com/curl/curl/pull/1866
2017-09-05mime: fix a trivial warning.Patrick Monnerat
2017-09-05mime: replace 'struct Curl_mimepart' by 'curl_mimepart' in encoder code.Patrick Monnerat
mime_state is now a typedef.
2017-09-05mime: implement encoders.Patrick Monnerat
curl_mime_encoder() is operational and documented. curl tool -F option is extended with ";encoder=". curl tool --libcurl option generates calls to curl_mime_encoder(). New encoder tests 648 & 649. Test 1404 extended with an encoder specification.
2017-09-05mime: unified to use the typedef'd mime structs everywhereDaniel Stenberg
... and slightly edited to follow our code style better.
2017-09-05openssl: use OpenSSL's default ciphers by defaultKamil Dudka
Up2date versions of OpenSSL maintain the default reasonably secure without breaking compatibility, so it is better not to override the default by curl. Suggested at https://bugzilla.redhat.com/1483972 Closes #1846
2017-09-05http-proxy: treat all 2xx as CONNECT successDaniel Stenberg
Added test 1904 to verify. Reported-by: Lawrence Wagerfield Fixes #1859 Closes #1860
2017-09-04mime: use CURL_ZERO_TERMINATED in examplesViktor Szakats
and some minor whitespace fixes
2017-09-04schannel: return CURLE_SSL_CACERT on failed verificationDaniel Stenberg
... not *CACERT_BADFILE as it isn't really because of a bad file. Bug: https://curl.haxx.se/mail/lib-2017-09/0002.html Closes #1858
2017-09-04lib: bump version info (soname). Adapt and reenable test 1135.Patrick Monnerat
2017-09-03mime: use size_t instead of ssize_t in public API interface.Patrick Monnerat
To support telling a string is nul-terminated, symbol CURL_ZERO_TERMINATED has been introduced. Documentation updated accordingly. symbols in versions updated. Added form API symbols deprecation info.
2017-09-03mime: remove support "-" stdin pseudo-file name in curl_mime_filedata().Patrick Monnerat
This feature is badly supported in Windows: as a replacement, a caller has to use curl_mime_data_cb() with fread, fseek and possibly fclose callbacks to process opened files. The cli tool and documentation are updated accordingly. The feature is however kept internally for form API compatibility, with the known caveats it always had. As a side effect, stdin size is not determined by the cli tool even if possible and this results in a chunked transfer encoding. Test 173 is updated accordingly.
2017-09-03mime: fix some implicit curl_off_t --> size_t conversion warnings.Patrick Monnerat
2017-09-02mime: new MIME API.Patrick Monnerat
Available in HTTP, SMTP and IMAP. Deprecates the FORM API. See CURLOPT_MIMEPOST. Lib code and associated documentation.
2017-09-02checksrc: disable SPACEBEFOREPAREN for case statement.Patrick Monnerat
The case keyword may be followed by a constant expression and thus should allow it to start with an open parenthesis.
2017-09-02Curl_base64_encode: always call with a real data handle.Patrick Monnerat
Some calls in different modules were setting the data handle to NULL, causing segmentation faults when using builds that enable character code conversions.
2017-09-02non-ascii: allow conversion functions to be called with a NULL data handle.Patrick Monnerat
2017-09-02http: fix a memory leakage in checkrtspprefix().Patrick Monnerat
2017-09-01curl_global_sslset: select backend by name case insensitivelyDaniel Stenberg
Closes #1849
2017-08-31strcase: corrected comment header for Curl_strcasecompare()Daniel Stenberg
2017-08-31darwinssl: handle long strings in TLS certs (follow-up)Jay Satiro
- Fix handling certificate subjects that are already UTF-8 encoded. Follow-up to b3b75d1 from two days ago. Since then a copy would be skipped if the subject was already UTF-8, possibly resulting in a NULL deref later on. Ref: https://github.com/curl/curl/issues/1823 Ref: https://github.com/curl/curl/pull/1831 Closes https://github.com/curl/curl/pull/1836
2017-08-31cyassl: call it the "WolfSSL" backendDaniel Stenberg
... instead of cyassl, as this is the current name for it. Closes #1844
2017-08-31polarssl: fix multissl breakageDaniel Stenberg
Reported-by: Dan Fandrich Bug: https://curl.haxx.se/mail/lib-2017-08/0121.html Closes #1843
2017-08-30makefile.m32: add multissl supportViktor Szakats
Closes https://github.com/curl/curl/pull/1840
2017-08-29asyn-thread: Fixed cleanup after OOMDan Fandrich
destroy_async_data() assumes that if the flag "done" is not set yet, the thread itself will clean up once the request is complete. But if an error (generally OOM) occurs before the thread even has a chance to start, it will never get a chance to clean up and memory will be leaked. By clearing "done" only just before starting the thread, the correct cleanup sequence will happen in all cases.
2017-08-28asyn-thread: Improved cleanup after OOM situationsDan Fandrich
2017-08-28asyn-thread: Set errno to the proper value ENOMEM in OOM situationDan Fandrich
This used to be set in some configurations to EAI_MEMORY which is not a valid value for errno and caused Curl_strerror to fail an assertion.
2017-08-28configure: allow setting the default SSL backendJohannes Schindelin
Previously, we used as default SSL backend whatever was first in the `available_backends` array. However, some users may want to override that default without patching the source code. Now they can: with the --with-default-ssl-backend=<backend> option of the ./configure script. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: use Curl_ssl_multi pseudo backend only when neededJohannes Schindelin
When only one SSL backend is configured, it is totally unnecessary to let multissl_init() configure the backend at runtime, we can select the correct backend at build time already. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28version: if built with more than one SSL backend, report all of themJohannes Schindelin
To discern the active one from the inactive ones, put the latter into parentheses. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28version: add the CURL_VERSION_MULTI_SSL feature flagJohannes Schindelin
This new feature flag reports When cURL was built with multiple SSL backends. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: introduce curl_global_sslset()Johannes Schindelin
Let's add a compile time safe API to select an SSL backend. This function needs to be called *before* curl_global_init(), and can be called only once. Side note: we do not explicitly test that it is called before curl_global_init(), but we do verify that it is not called multiple times (even implicitly). If SSL is used before the function was called, it will use whatever the CURL_SSL_BACKEND environment variable says (or default to the first available SSL backend), and if a subsequent call to curl_global_sslset() disagrees with the previous choice, it will fail with CURLSSLSET_TOO_LATE. The function also accepts an "avail" parameter to point to a (read-only) NULL-terminated list of available backends. This comes in real handy if an application wants to let the user choose between whatever SSL backends the currently available libcurl has to offer: simply call curl_global_sslset(-1, NULL, &avail); which will return CURLSSLSET_UNKNOWN_BACKEND and populate the avail variable to point to the relevant information to present to the user. Just like with the HTTP/2 push functions, we have to add the function declaration of curl_global_sslset() function to the header file *multi.h* because VMS and OS/400 require a stable order of functions declared in include/curl/*.h (where the header files are sorted alphabetically). This looks a bit funny, but it cannot be helped. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: refactor out essential information about the SSL backendsJohannes Schindelin
There is information about the compiled-in SSL backends that is really no concern of any code other than the SSL backend itself, such as which function (if any) implements SHA-256 summing. And there is information that is really interesting to the user, such as the name, or the curl_sslbackend value. Let's factor out the latter into a publicly visible struct. This information will be used in the upcoming API to set the SSL backend globally. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: allow selecting which SSL backend to use at runtimeJohannes Schindelin
When building software for the masses, it is sometimes not possible to decide for all users which SSL backend is appropriate. Git for Windows, for example, uses cURL to perform clones, fetches and pushes via HTTPS, and some users strongly prefer OpenSSL, while other users really need to use Secure Channel because it offers enterprise-ready tools to manage credentials via Windows' Credential Store. The current Git for Windows versions use the ugly work-around of building libcurl once with OpenSSL support and once with Secure Channel support, and switching out the binaries in the installer depending on the user's choice. Needless to say, this is a super ugly workaround that actually only works in some cases: Git for Windows also comes in a portable form, and in a form intended for third-party applications requiring Git functionality, in which cases this "swap out libcurl-4.dll" simply is not an option. Therefore, the Git for Windows project has a vested interest in teaching cURL to make the SSL backend a *runtime* option. This patch makes that possible. By running ./configure with multiple --with-<backend> options, cURL will be built with multiple backends. For the moment, the backend can be configured using the environment variable CURL_SSL_BACKEND (valid values are e.g. "openssl" and "schannel"). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: fold the backend ID into the Curl_ssl structureJohannes Schindelin
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28curl_ntlm_core: don't complain but #include OpenSSL header if neededJohannes Schindelin
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: encapsulate SSL backend-specific dataJohannes Schindelin
So far, all of the SSL backends' private data has been declared as part of the ssl_connect_data struct, in one big #if .. #elif .. #endif block. This can only work as long as the SSL backend is a compile-time option, something we want to change in the next commits. Therefore, let's encapsulate the exact data needed by each SSL backend into a private struct, and let's avoid bleeding any SSL backend-specific information into urldata.h. This is also necessary to allow multiple SSL backends to be compiled in at the same time, as e.g. OpenSSL's and CyaSSL's headers cannot be included in the same .c file. To avoid too many malloc() calls, we simply append the private structs to the connectdata struct in allocate_conn(). This requires us to take extra care of alignment issues: struct fields often need to be aligned on certain boundaries e.g. 32-bit values need to be stored at addresses that divide evenly by 4 (= 32 bit / 8 bit-per-byte). We do that by assuming that no SSL backend's private data contains any fields that need to be aligned on boundaries larger than `long long` (typically 64-bit) would need. Under this assumption, we simply add a dummy field of type `long long` to the `struct connectdata` struct. This field will never be accessed but acts as a placeholder for the four instances of ssl_backend_data instead. the size of each ssl_backend_data struct is stored in the SSL backend-specific metadata, to allow allocate_conn() to know how much extra space to allocate, and how to initialize the ssl[sockindex]->backend and proxy_ssl[sockindex]->backend pointers. This would appear to be a little complicated at first, but is really necessary to encapsulate the private data of each SSL backend correctly. And we need to encapsulate thusly if we ever want to allow selecting CyaSSL and OpenSSL at runtime, as their headers cannot be included within the same .c file (there are just too many conflicting definitions and declarations for that). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: prepare the SSL backends for encapsulated private dataJohannes Schindelin
At the moment, cURL's SSL backend needs to be configured at build time. As such, it is totally okay for them to hard-code their backend-specific data in the ssl_connect_data struct. In preparation for making the SSL backend a runtime option, let's make the access of said private data a bit more abstract so that it can be adjusted later in an easy manner. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28urldata.h: move SSPI-specific #include to correct locationJohannes Schindelin
In 86b889485 (sasl_gssapi: Added GSS-API based Kerberos V5 variables, 2014-12-03), an SSPI-specific field was added to the kerberos5data struct without moving the #include "curl_sspi.h" later in the same file. This broke the build when SSPI was enabled, unless Secure Channel was used as SSL backend, because it just so happens that Secure Channel also requires "curl_sspi.h" to be #included. In f4739f639 (urldata: include curl_sspi.h when Windows SSPI is enabled, 2017-02-21), this bug was fixed incorrectly: Instead of moving the appropriate conditional #include, the Secure Channel-conditional part was now also SSPI-conditional. Fix this problem by moving the correct #include instead. This is also required for an upcoming patch that moves all the Secure Channel-specific stuff out of urldata.h and encapsulates it properly in vtls/schannel.c instead. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28urldata.h: remove support for obsolete PolarSSL versionJohannes Schindelin
Since 5017d5ada (polarssl: now require 1.3.0+, 2014-03-17), we require a newer PolarSSL version. No need to keep code trying to support any older version. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28getinfo: access SSL internals via Curl_sslJohannes Schindelin
In the ongoing endeavor to abstract out all SSL backend-specific functionality, this is the next step: Instead of hard-coding how the different SSL backends access their internal data in getinfo.c, let's implement backend-specific functions to do that task. This will also allow for switching SSL backends as a runtime option. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: move SSL backends' private constants out of their header filesJohannes Schindelin
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28axtls: use Curl_none_* versions of init() and cleanup()Johannes Schindelin
There are convenient no-op versions of the init/cleanup functions now, no need to define private ones for axTLS. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28vtls: remove obsolete declarations of SSL backend functionalityJohannes Schindelin
These functions are all available via the Curl_ssl struct now, no need to declare them separately anymore. As the global declarations are removed, the corresponding function definitions are marked as file-local. The only two exceptions here are Curl_mbedtls_shutdown() and Curl_polarssl_shutdown(): only the declarations were removed, there are no function definitions to mark file-local. Please note that Curl_nss_force_init() is *still* declared globally, as the only SSL backend-specific function, because it was introduced specifically for the use case where cURL was compiled with `--without-ssl --with-nss`. For details, see f3b77e561 (http_ntlm: add support for NSS, 2010-06-27). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2017-08-28schannel: reorder functions topologicallyJohannes Schindelin
The _shutdown() function calls the _session_free() function; While this is not a problem now (because schannel.h declares both functions), a patch looming in the immediate future with make all of these functions file-local. So let's just move the _session_free() function's definition before it is called. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
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